Mason Lake

Marquette, Adams County, Wisconsin

OverviewFacts & Figures

Physical Characteristics

Surface Area (Acres)882
Maximum Depth (ft)9
Mean Depth (ft)7
Shoreline (miles)
Bottom Composition60% sand, 5% gravel, 0% rock, 35% muck
Water Clarity — Secchi Depth (ft)
Trophic Status
Drainage BasinDRAINAGE
Lake Classflowage
Public Access
Township
GPS Coordinates43.65780° N, 89.60790° W
WBIC (DNR ID)175700

Fish Species

5 species documented

AbundantCommonPresentRare
SpeciesAbundanceLast Survey
Largemouth BassCommon
CatfishPresent
MuskyPresent
Northern PikePresent
PanfishPresent

Boat Landings

3 landings

NameTypeRampTrailersFee
Boat Landing 1Public
Boat Landing 2Public
Boat Landing 3Public

Invasive Species

Invasive species have been documented in or near this lake. Please clean, drain, and dry all watercraft and equipment before leaving to prevent spread.

SpeciesStatusFirst Detected
Banded Mystery SnailConfirmed
Brittle WaternymphConfirmed
Curly-Leaf PondweedConfirmed
Eurasian Water-MilfoilConfirmed
Japanese knotweed (Fallopia japonica)Confirmed
Phragmites (non-native)Confirmed
Yellow IrisConfirmed

Data sourced from Wisconsin DNR lake surveys. Last scraped: 3/24/2026.

Mason Lake — Facts & Figures | Stay Northern